IVDR Guide: Everything You Need to Know About the EU In Vitro Diagnostic Regulation

The In Vitro Diagnostic Regulation (IVDR) has transformed the regulatory landscape for diagnostic devices in Europe. Whether you are developing a new in vitro diagnostic medical device, transitioning a legacy product from the IVDD, or preparing for CE marking, understanding the requirements of Regulation (EU) 2017/746 is essential. This comprehensive guide explains IVDR classification, manufacturer obligations, performance evaluation, technical documentation, conformity assessment, post-market surveillance, and the practical steps needed to achieve and maintain compliance within the European market.
IVDR for beginners

Updated: 22nd June 2026

Reviewed by: David Small, BSc (Hons), MSc, MTOPRA (Founder and CEO)

What Is the EU IVDR (Regulation (EU) 2017/746)?

The In Vitro Diagnostic Regulation (IVDR), formally known as Regulation (EU) 2017/746, is the legislation governing in vitro diagnostic medical devices (IVDs) within the European Union. Introduced to replace the previous In Vitro Diagnostic Directive (IVDD 98/79/EC), the IVDR has significantly strengthened regulatory oversight, increased clinical evidence requirements, and introduced new obligations for manufacturers, authorised representatives, importers, distributors, and notified bodies.

For organisations developing, manufacturing, or placing diagnostic devices on the European market, compliance with the IVDR is essential. Failure to meet the requirements can prevent market access, lead to regulatory enforcement action, or result in product withdrawals.

This guide provides a comprehensive overview of the IVDR, covering classification, performance evaluation, technical documentation, conformity assessment, post-market surveillance, economic operator responsibilities, and the practical steps manufacturers must take to achieve compliance.

Whether you are developing a new diagnostic product, transitioning a legacy device from the IVDD, or simply seeking to understand the regulatory landscape, this guide will help you navigate the requirements of Regulation (EU) 2017/746.

What is the IVDR?

The In Vitro Diagnostic Regulation (EU) 2017/746 establishes the legal framework for in vitro diagnostic medical devices within the European Economic Area (EEA). The regulation applies directly across all EU Member States and is designed to ensure a consistently high level of patient safety while supporting innovation within the diagnostics industry.

An in vitro diagnostic medical device is any medical device intended by the manufacturer to be used for the examination of specimens derived from the human body. These specimens may include blood, urine, saliva, tissue samples, or other biological materials.

Examples of products covered by the IVDR include:

  • Pregnancy tests
  • Blood glucose monitoring systems
  • COVID-19 diagnostic tests
  • HIV and infectious disease testing kits
  • Genetic testing products
  • Laboratory reagents
  • Calibrators and control materials
  • Companion diagnostics
  • Diagnostic software
  • Point-of-care testing devices

The IVDR entered into force on 25 May 2017 and became fully applicable on 26 May 2022. However, due to the significant changes introduced by the regulation and limited notified body capacity, various transitional provisions have been implemented to support manufacturers during the transition period.

Why Was the IVDD Replaced?

The In Vitro Diagnostic Directive (98/79/EC) served as the primary regulatory framework for IVDs for over two decades. During this period, diagnostic technologies evolved significantly, particularly in areas such as molecular diagnostics, genetic testing, personalised medicine, and software-based diagnostic solutions.

While the IVDD successfully facilitated market access, regulators identified several weaknesses within the directive framework:

  • Limited clinical evidence requirements
  • Extensive reliance on manufacturer self-certification
  • Insufficient oversight of higher-risk devices
  • Inconsistent application across Member States
  • Limited post-market surveillance requirements
  • Inadequate traceability systems

The IVDR was developed to address these shortcomings by introducing a more robust and risk-based regulatory framework.

The key objectives of the IVDR include:

Improved Patient Safety

Manufacturers must now provide significantly greater levels of evidence demonstrating device safety and performance before products can be placed on the market.

Increased Regulatory Oversight

A substantially higher proportion of IVDs now require assessment by a notified body, reducing reliance on self-declaration.

Enhanced Clinical Evidence Requirements

Manufacturers must demonstrate scientific validity, analytical performance, and clinical performance through structured performance evaluation activities.

Better Traceability

The introduction of Unique Device Identification (UDI) systems improves traceability throughout the supply chain and product lifecycle.

Stronger Post-Market Surveillance

Manufacturers are required to continuously monitor the performance and safety of devices once they are placed on the market.

Greater Transparency

The European Database on Medical Devices (EUDAMED) increases visibility of devices, economic operators, certificates, and vigilance information.

Which Products Are Covered by the IVDR?

The IVDR applies to a wide range of products intended for diagnostic purposes.

Reagents

Chemical, biological, or immunological substances used to detect, measure, or monitor physiological or pathological conditions.

Calibrators and Control Materials

Products used to verify the accuracy, reliability, and consistency of diagnostic systems.

Instruments and Equipment

Devices intended to perform diagnostic testing, analyse specimens, or support diagnostic processes.

Specimen Receptacles

Containers specifically intended to collect and preserve specimens obtained from the human body for diagnostic examination.

Companion Diagnostics

Tests used to identify patients who are suitable candidates for a particular medicinal product or therapy.

Self-Testing Devices

Products intended to be used by lay persons outside professional healthcare environments, such as home testing kits.

Near-Patient Testing Devices

Diagnostic products designed for use close to the patient, allowing rapid testing and immediate clinical decision-making.

Software

Software intended to provide diagnostic information or influence clinical decisions based on diagnostic data may also fall within the scope of the IVDR.

Determining whether a product qualifies as an IVD is one of the most important early regulatory decisions manufacturers must make. An incorrect determination can lead to inappropriate regulatory pathways and significant compliance challenges later in the product lifecycle.

IVDR Classification System

One of the most significant changes introduced by the IVDR is the adoption of a risk-based classification framework.

Under the previous IVDD, the majority of IVDs could be self-certified by manufacturers. Under the IVDR, approximately 80–90% of devices now require notified body involvement.

The classification system is based on seven classification rules contained within Annex VIII of the regulation.

Devices are classified into four risk classes:

Class A

Class A devices represent the lowest level of risk.

Examples include:

  • Laboratory instruments
  • Buffer solutions
  • General laboratory products

Many Class A devices can still be self-certified, although sterile Class A devices require notified body involvement for sterility aspects.

Class B

Class B devices present a moderate level of risk.

Examples may include:

  • Certain self-testing products
  • Clinical chemistry assays
  • General diagnostic reagents

These devices require notified body assessment before CE marking.

Class C

Class C devices present a higher risk due to their impact on individual patient management.

Examples include:

  • Cancer screening tests
  • Genetic tests
  • Companion diagnostics
  • Blood glucose testing systems

Most manufacturers currently transitioning to IVDR certification fall within this category.

Class D

Class D devices represent the highest level of risk and may have significant implications for public health.

Examples include:

  • HIV testing kits
  • Hepatitis testing kits
  • Blood grouping products
  • Screening tests for transmissible infectious diseases

These devices are subject to the highest levels of regulatory scrutiny and additional involvement from EU reference laboratories where applicable.

Correct classification is critical because it determines the conformity assessment route, level of notified body involvement, performance evaluation expectations, and regulatory obligations throughout the product lifecycle.

IVDR for beginners

General Obligations of Manufacturers Under IVDR

Article 10 of the IVDR establishes the core responsibilities of manufacturers placing in vitro diagnostic medical devices on the European market. Unlike the previous IVDD framework, the IVDR places significantly greater emphasis on lifecycle compliance, requiring manufacturers to actively manage the safety and performance of their devices from development through to post-market activities.

Manufacturers are responsible for ensuring that their devices comply with all applicable requirements before being placed on the market. This includes implementing and maintaining a suitable quality management system, preparing technical documentation, conducting performance evaluations, applying risk management processes, and establishing robust post-market surveillance procedures.

Manufacturers must also ensure that devices are appropriately labelled, registered where required, and supported by accurate declarations of conformity. Compliance is not a one-time activity; it must be maintained throughout the entire lifecycle of the device.

Failure to meet Article 10 requirements can result in regulatory action, suspension of certification, or removal of products from the market.

Performance Evaluation Requirements

One of the most significant changes introduced by the IVDR is the increased emphasis on clinical evidence and performance evaluation. Manufacturers must demonstrate that their devices achieve their intended purpose and perform safely and effectively under normal conditions of use.

Performance evaluation under the IVDR consists of three interconnected elements:

Scientific Validity

Scientific validity establishes the association between an analyte and a particular clinical condition or physiological state.

Analytical Performance

Analytical performance demonstrates the ability of the device to accurately detect or measure the target analyte.

Clinical Performance

Clinical performance confirms that the results generated by the device correlate with a specific clinical condition or intended medical purpose when used within the target population.

Manufacturers are expected to prepare and maintain Performance Evaluation Plans (PEPs), Performance Evaluation Reports (PERs), and ongoing performance evaluation activities throughout the product lifecycle.

The depth of evidence required will vary depending on device classification, intended purpose, and risk profile.

Technical Documentation Requirements

Technical documentation forms the foundation of IVDR compliance and serves as the primary evidence demonstrating conformity with the regulation. Manufacturers must maintain comprehensive records that allow regulators and notified bodies to assess device safety, performance, and regulatory compliance.

Annexes II and III of the IVDR define the information that must be included within technical documentation.

Typical documentation includes:

  • Device description and specification
  • Intended purpose statements
  • Classification rationale
  • Design and manufacturing information
  • Risk management documentation
  • Performance evaluation evidence
  • Verification and validation activities
  • Labelling and instructions for use
  • Post-market surveillance documentation

Technical documentation must be continuously maintained and updated throughout the device lifecycle. Manufacturers should view technical documentation as a living regulatory file rather than a static submission package.

Quality Management Systems and ISO 13485

The IVDR requires manufacturers to establish, document, implement, maintain, and continuously improve a quality management system (QMS) appropriate to the nature and risk classification of their devices.

While the IVDR does not explicitly mandate ISO 13485 certification, ISO 13485:2016 is widely recognised as the international standard for medical device quality management systems and is commonly used to demonstrate compliance with Article 10 requirements.

A compliant quality management system should address:

  • Regulatory compliance processes
  • Design and development controls
  • Supplier and purchasing controls
  • Risk management integration
  • Corrective and preventive actions (CAPA)
  • Complaint handling
  • Internal audits
  • Management review
  • Training and competence management
  • Post-market surveillance activities

For devices requiring notified body assessment, a robust quality management system is often one of the most heavily scrutinised aspects of the conformity assessment process.

UDI and EUDAMED Requirements

To improve traceability and transparency across the European market, the IVDR introduces Unique Device Identification (UDI) requirements and integration with the European Database on Medical Devices (EUDAMED).

The UDI system assigns unique identifiers to devices, enabling improved tracking throughout the supply chain and facilitating more effective post-market surveillance and vigilance activities.

The UDI framework consists of:

  • UDI-DI (Device Identifier)
  • UDI-PI (Production Identifier)

Manufacturers must ensure that appropriate UDI information is applied to devices, packaging, and associated regulatory records where required.

EUDAMED serves as the central European database for medical devices and IVDs. It supports transparency by storing information relating to manufacturers, authorised representatives, devices, certificates, vigilance activities, and clinical evidence.

Manufacturers should ensure that registration obligations are understood and addressed as part of their broader compliance strategy.

Economic Operators Under the IVDR

The IVDR establishes specific responsibilities for all economic operators involved in placing devices on the European market. These responsibilities extend beyond manufacturers and include authorised representatives, importers, and distributors.

Manufacturers

Manufacturers retain ultimate responsibility for device compliance and regulatory oversight.

Authorised Representatives

Non-EU manufacturers must appoint an authorised representative established within the European Union to act on their behalf in relation to certain regulatory obligations.

Importers

Importers are responsible for verifying compliance before devices are introduced into the European market.

Distributors

Distributors must exercise due care to ensure that only compliant devices are made available to customers.

The IVDR places increased accountability on all parties within the supply chain, making regulatory responsibilities more transparent and enforceable.

Notified Bodies and CE Marking Under the IVDR

One of the most significant changes introduced by the IVDR is the increased involvement of Notified Bodies in the conformity assessment process. Under the previous IVDD, the majority of in vitro diagnostic devices could be placed on the market through manufacturer self-declaration. Under the IVDR, an estimated 80–90% of devices now require review by a designated Notified Body before CE marking can be achieved.

The conformity assessment process varies depending on the device classification and risk profile. Higher-risk devices require more extensive scrutiny of both the manufacturer’s quality management system and technical documentation.

For many manufacturers, the process typically includes:

  • Confirmation of device classification
  • Assessment of the quality management system
  • Review of technical documentation
  • Evaluation of performance evaluation evidence
  • Verification of risk management activities
  • Assessment of post-market surveillance procedures
  • Issuance of certification where compliance is demonstrated

Once conformity has been established, manufacturers may draw up an EU Declaration of Conformity and affix the CE marking, allowing the device to be placed on the European market.

Given the limited number of IVDR-designated Notified Bodies and the increased complexity of the certification process, manufacturers are encouraged to engage with a Notified Body as early as possible within their regulatory strategy.

Post-Market Surveillance and Vigilance

Achieving CE marking is not the end of the regulatory journey. The IVDR places considerable emphasis on post-market surveillance (PMS), requiring manufacturers to actively monitor the safety, performance, and effectiveness of devices once they have been placed on the market.

The purpose of PMS is to ensure that real-world device performance remains consistent with the claims made during conformity assessment and that any emerging risks are identified and addressed promptly.

A comprehensive PMS system should include:

  • Complaint handling procedures
  • Customer feedback collection
  • Trend analysis
  • Literature monitoring
  • Vigilance reporting
  • Corrective and preventive actions (CAPA)
  • Periodic review of risk management documentation
  • Continuous performance evaluation activities

Manufacturers must establish and maintain a Post-Market Surveillance Plan outlining how data will be collected, analysed, and utilised throughout the device lifecycle.

Depending on the classification of the device, manufacturers may also be required to prepare:

Post-Market Performance Follow-Up (PMPF)

PMPF activities collect and evaluate additional data regarding device performance after market placement.

Periodic Safety Update Reports (PSUR)

Class C and Class D devices generally require periodic reporting summarising safety, performance, and post-market findings.

Vigilance Reporting

Manufacturers must report serious incidents and field safety corrective actions to the relevant competent authorities within specified timelines.

An effective PMS system not only supports regulatory compliance but also contributes to continuous product improvement and patient safety.

IVDR Transitional Provisions

The transition from the IVDD to the IVDR has been one of the most significant regulatory changes within the diagnostic industry. Recognising the challenges faced by manufacturers and the limited capacity of Notified Bodies, the European Commission introduced transitional provisions to facilitate a gradual transition to the new regulatory framework.

These provisions allow certain legacy devices that were lawfully placed on the market under the IVDD to remain available under specific conditions and timelines.

To benefit from transitional provisions, manufacturers generally must:

  • Maintain compliance with applicable IVDD requirements
  • Ensure no significant changes are made to the device’s design or intended purpose
  • Implement IVDR-compliant post-market surveillance requirements
  • Establish appropriate quality management systems
  • Engage with a Notified Body where required

While transitional provisions provide valuable flexibility, manufacturers should not view them as an opportunity to delay compliance activities. The regulatory expectations under the IVDR remain substantial, and many organisations have found that early preparation significantly reduces certification delays and business disruption.

Manufacturers should regularly monitor updates from the European Commission and Medical Device Coordination Group (MDCG), as guidance and implementation timelines continue to evolve.

Common IVDR Compliance Challenges

Although the objectives of the IVDR are clear, achieving compliance can present significant challenges for manufacturers.

Some of the most common issues encountered during IVDR implementation include:

Incorrect Device Classification

Misclassification can lead to inappropriate conformity assessment routes, delayed certification, and additional regulatory costs.

Insufficient Performance Evaluation Evidence

Many manufacturers underestimate the amount of scientific, analytical, and clinical evidence required to support compliance.

Incomplete Technical Documentation

Technical documentation deficiencies remain one of the most common findings identified during regulatory assessments.

Delayed Notified Body Engagement

Waiting too long to engage with a Notified Body can result in significant certification delays due to limited assessment capacity.

Weak Post-Market Surveillance Systems

Manufacturers often focus heavily on pre-market activities while underestimating the importance of ongoing PMS obligations.

Resource Constraints

The increased regulatory burden associated with the IVDR requires greater investment in regulatory affairs, quality assurance, clinical evidence generation, and ongoing compliance management.

Organisations that adopt a proactive and structured compliance strategy are generally better positioned to navigate these challenges successfully.

Step-by-Step IVDR Compliance Roadmap

While every device and organisation is unique, most manufacturers will follow a similar pathway towards IVDR compliance.

Step 1: Confirm the Product is an IVD

Determine whether the product falls within the scope of Regulation (EU) 2017/746 and assess any borderline considerations.

Step 2: Determine Device Classification

Apply the classification rules contained within Annex VIII to establish the appropriate risk class.

Step 3: Develop a Regulatory Strategy

Identify applicable regulatory requirements, conformity assessment routes, and evidence expectations.

Step 4: Establish a Quality Management System

Implement a quality management system capable of supporting IVDR compliance, typically aligned with ISO 13485.

Step 5: Conduct Risk Management Activities

Perform risk management in accordance with recognised standards such as ISO 14971.

Step 6: Generate Performance Evaluation Evidence

Compile scientific validity, analytical performance, and clinical performance data demonstrating that the device performs as intended.

Step 7: Prepare Technical Documentation

Develop technical documentation in accordance with Annexes II and III of the IVDR.

Step 8: Complete Conformity Assessment

Engage with a Notified Body where required and successfully complete the certification process.

Step 9: Register Devices and Economic Operators

Complete applicable registration obligations, including UDI and EUDAMED requirements where relevant.

Step 10: Maintain Ongoing Compliance

Implement post-market surveillance, vigilance, performance evaluation updates, and quality management activities throughout the device lifecycle.

By approaching compliance through a structured roadmap, manufacturers can reduce regulatory risk, improve project planning, and minimise delays during certification.

How Patient Guard Can Help

Navigating the IVDR can be challenging, particularly for manufacturers facing complex classification decisions, extensive documentation requirements, evolving guidance, and increasing regulatory scrutiny.

Patient Guard provides practical regulatory support to help manufacturers achieve and maintain IVDR compliance throughout the entire product lifecycle.

Our services include:

  • IVDR regulatory strategy and planning
  • Device qualification and classification
  • Gap assessments and compliance reviews
  • Technical documentation preparation and review
  • Performance evaluation support
  • Risk management support
  • Quality management system implementation
  • ISO 13485 consulting
  • EU Authorised Representative services
  • UK Responsible Person services
  • Post-market surveillance support
  • Regulatory training and ongoing compliance assistance

Whether you are developing a new IVD, transitioning a legacy device, preparing for Notified Body assessment, or seeking long-term regulatory support, our experienced consultants can help you navigate the requirements of Regulation (EU) 2017/746 with confidence.

Frequently Asked Questions About the IVDR

The In Vitro Diagnostic Regulation (IVDR) is Regulation (EU) 2017/746, which governs the safety, performance, and marketing of in vitro diagnostic medical devices within the European Union. It replaced the In Vitro Diagnostic Directive (IVDD 98/79/EC) and introduced stricter requirements for clinical evidence, technical documentation, quality management systems, and post-market surveillance.

The IVDR entered into force on 25 May 2017 and became fully applicable on 26 May 2022. However, transitional provisions have been introduced to allow certain legacy devices to remain on the market under specific conditions while manufacturers transition to full IVDR compliance.

The IVDR introduced significantly more stringent regulatory requirements compared to the IVDD. Key changes include a risk-based classification system, increased Notified Body involvement, enhanced performance evaluation requirements, stricter technical documentation expectations, improved traceability through UDI, and stronger post-market surveillance obligations.

The IVDR applies to in vitro diagnostic medical devices intended to examine specimens derived from the human body. Examples include pregnancy tests, blood glucose monitoring systems, infectious disease tests, genetic testing kits, companion diagnostics, laboratory reagents, diagnostic software, and self-testing devices.

The IVDR classifies devices into four risk classes:

  • Class A – Lowest risk devices
  • Class B – Moderate risk devices
  • Class C – Higher-risk devices affecting patient management
  • Class D – Highest-risk devices with significant public health implications

Device classification determines the conformity assessment route and level of regulatory scrutiny required.

No. Some Class A devices may still be self-certified by manufacturers. However, the majority of IVDs now require Notified Body involvement. It is estimated that approximately 80–90% of devices require third-party assessment under the IVDR, compared to around 10–20% under the previous IVDD framework.

A Performance Evaluation Report (PER) is a key IVDR document that demonstrates a device's scientific validity, analytical performance, and clinical performance. The report provides evidence that the device performs as intended and supports the manufacturer's claims regarding safety and effectiveness.

The IVDR does not explicitly require ISO 13485 certification. However, manufacturers must establish and maintain a quality management system, and ISO 13485:2016 is widely recognised as the most effective framework for meeting these requirements. Most manufacturers seeking IVDR certification choose to implement ISO 13485.

Technical documentation is the collection of evidence demonstrating compliance with the IVDR. It typically includes device descriptions, intended purpose statements, risk management files, performance evaluation reports, verification and validation data, labelling, instructions for use, and post-market surveillance documentation.

UDI stands for Unique Device Identification. It is a system designed to improve traceability throughout the supply chain and product lifecycle. UDI enables regulators, healthcare providers, and manufacturers to identify devices more efficiently and supports post-market surveillance and vigilance activities.

EUDAMED is the European Database on Medical Devices. It is designed to improve transparency and facilitate information sharing between manufacturers, authorised representatives, competent authorities, and notified bodies. EUDAMED contains information relating to devices, certificates, registrations, vigilance activities, and economic operators.

Manufacturers located outside the European Union must appoint an EU Authorised Representative to place devices on the EU market. The authorised representative acts on behalf of the manufacturer for certain regulatory obligations and serves as a point of contact for competent authorities.

IVDR transitional provisions allow certain devices that were previously certified under the IVDD to remain on the market temporarily while manufacturers transition to full IVDR compliance. Eligibility depends on factors such as device classification, certification status, quality management system implementation, and compliance with post-market surveillance requirements.

Failure to comply with the IVDR may result in regulatory action, refusal of certification, market withdrawal, product recalls, restrictions on market access, or enforcement measures by competent authorities. Maintaining compliance throughout the device lifecycle is essential for continued access to the European market.

Patient Guard supports manufacturers throughout the IVDR compliance journey, including device classification, regulatory strategy, technical documentation, performance evaluation, risk management, quality management systems, EU Authorised Representative services, and ongoing post-market compliance support. Our experienced consultants help manufacturers achieve compliance efficiently while minimising regulatory risk.

References

This guide is based on the following legislation, international standards and official regulatory guidance relating to the European In Vitro Diagnostic Medical Devices Regulation (IVDR) and IVD regulatory compliance.

Organisation Reference Why it's relevant
European Union Regulation (EU) 2017/746 on In Vitro Diagnostic Medical Devices (IVDR) Provides the legal framework governing the placing on the market, conformity assessment and lifecycle management of in vitro diagnostic medical devices within the European Union.
European Commission MDCG Endorsed Documents and Other Guidance Provides the Medical Device Coordination Group (MDCG) guidance documents supporting implementation of the IVDR, including classification, performance evaluation and transitional provisions.
European Commission Notified Bodies for Medical Devices Provides official information on the designation and oversight of Notified Bodies responsible for conformity assessment under the IVDR.
International Organization for Standardization (ISO) ISO 13485:2016 – Medical Devices – Quality Management Systems – Requirements for Regulatory Purposes Defines the internationally recognised Quality Management System requirements expected of manufacturers seeking IVDR compliance.
International Organization for Standardization (ISO) ISO 14971:2019 – Medical Devices – Application of Risk Management to Medical Devices Provides the internationally recognised framework for risk management throughout the lifecycle of in vitro diagnostic medical devices.
European Commission EUDAMED – European Database on Medical Devices Provides official information on EUDAMED, including economic operator registration, UDI/device registration and other IVDR-related modules.

IVDR legislation, guidance and regulatory expectations continue to evolve. Manufacturers should always consult the latest published legislation, recognised standards and official guidance when developing, certifying and maintaining compliant in vitro diagnostic medical devices throughout their lifecycle.

David Small BSc (Hons), MSc, MTOPRA

David Small BSc (Hons), MSc, MTOPRA

Reviewed by
David Small, BSc (Hons), MSc, MTOPRA
Founder & CEO |
20+ years in medical device regulatory affairs,  MDR/IVDR compliance and quality systems.

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